Auricular dimensions in computed-tomography: Unveiling the relationship between ear dimensions, age, and sex using three-dimensional volume rendering reconstructions

Table 1 Standardization for auricular size assessment using predefined anatomical landmarks

Measurement	Definition
Length 1	Distance between sa and sba in cm
Length 2	Distance between t and sba in cm
Width 1	Distance between pa and base sup (at the vertical level from pra sup) while distance line needs to be orthogonal to length1 in cm
Width 2	Distance between t and pa in cm
Perimeter	Auricular perimeter measured through distance lines including sa, pa, sba, pra inf, t and pra sup in cm

sa: Superaurale; sba: Subaurale; t: Tragion; pa: Postaurale; sup: Superior; inf: Inferior; pra: Preaurale